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Letter.; Patent No. 82,455, dans september 22, 1868.

IMPROVEMENT' IN SHAFT-coutume.

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TO ALL WHOM IT MAY CON CERN Be it known that I, JAMES S. UPTON, of the city of Battle Creek, in the county of Calhoun, and in the State of Michigan, have invented a Safety Coupling-Ring for Threshing-Machines; and do hereby declare that the following is a'fnll, clear, and exact description thereof', reference being had to the accompanying drawings,

and to the letters of reference marked thereon.

The nature of my invention consists in providing the ring of a safety-coupling with slots in which leather or other keys are inserted to keep -the pins from moving out, thereb'yr preventing any accidents which are liable to occur when the pins protrude on the outside of the ring, by catching in persons clothes and dragging them on to the shaft.

In order to enable others skilled in th'art to make and use my invention, Iwill now proceed to describe its construction and operation, referring to the annexed drawings, whichv form a part 0f this specificatiomandl in which- I Figure 1 is a. frontview, and

Figure 2 a sectional side view. v

A represents the coupling-ring; B B, the-sockets in which the shaft is inserted. These socketsare, on their inner end, provided with gudgeons C C, which are insertedinto the ring A. Pins a a are put through the ring A, and through the gudgeons C C, at right angles to each other, as shown in iig. 1. Y

`At the ends of each of these pins,`slots x a: are made through the said ring, and in these slots leather or other keys are inserted, which efi'ectuallyV prevent the pins from moving outward in either direction.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The sockets B B, provided withpgudgeons C C, vand connected to the slotted ringA by means of the pins an, secured in the slots :c a: by the leather keys, all as herein shown and described. p

In testimony that I claim the foregoing, I have hereunto set rny hand, this 10th day of July', 1868.

' JAMES S. UPTON.

Witnesses:

B. T. SKINNan, HENRY S. Bnooxs. 

